Comments on: Will Maatkit make me sane? http://leapfrog.motd.org/2008/03/will-maatkit-make-me-sane/ Ravings of a keyboard cowboy Thu, 05 Nov 2009 22:31:11 +0000 http://wordpress.org/?v=2.8.4 hourly 1 By: http://leapfrog.motd.org http://leapfrog.motd.org/2008/03/will-maatkit-make-me-sane/comment-page-1/#comment-20 http://leapfrog.motd.org Thu, 20 Mar 2008 22:23:06 +0000 http://leapfrog.motd.org/2008/03/18/will-maatkit-make-me-sane/#comment-20 Archon810: I looked at the mk-parallel-dump code and it only counts seconds using the system clock. This means it isn't counting actual cpu time but wall clock time. The 'dump time' is actually the sum total of all the child processes while the 'wall-clock time' is the total time the script takes to complete (from hitting Enter to termination.) In my case, mk-parallel-dump was faster than mysqldump by 1400+ seconds, so roughly twice as fast. Archon810: I looked at the mk-parallel-dump code and it only counts seconds using the system clock. This means it isn’t counting actual cpu time but wall clock time. The ‘dump time’ is actually the sum total of all the child processes while the ‘wall-clock time’ is the total time the script takes to complete (from hitting Enter to termination.)

In my case, mk-parallel-dump was faster than mysqldump by 1400+ seconds, so roughly twice as fast.

]]> By: http://openid.aol.com/Archon810 http://leapfrog.motd.org/2008/03/will-maatkit-make-me-sane/comment-page-1/#comment-21 http://openid.aol.com/Archon810 Thu, 20 Mar 2008 01:56:30 +0000 http://leapfrog.motd.org/2008/03/18/will-maatkit-make-me-sane/#comment-21 Well, if the wall time in your test is realtime, then mk-parallel-dump is faster, otherwise if dump time is realtime, then it's slower. So which ran faster? Well, if the wall time in your test is realtime, then mk-parallel-dump is faster, otherwise if dump time is realtime, then it’s slower. So which ran faster?

]]> By: http://leapfrog.motd.org http://leapfrog.motd.org/2008/03/will-maatkit-make-me-sane/comment-page-1/#comment-22 http://leapfrog.motd.org Wed, 19 Mar 2008 18:39:52 +0000 http://leapfrog.motd.org/2008/03/18/will-maatkit-make-me-sane/#comment-22 awfief: The query analyzer does look like a lot of fun. As a managed service provider, I don't have the (usually) tighter integration with the development teams that would allow me to review code and look for performance bottlenecks. I usually have to treat the app as a black box and examine everything else. Most of my clients have dbas so I'm relegated to plain ol' sys admin duties. What's sadder is, to date, I've only had one client actually make it a point to review the slow log on a regular basis. Oh well...you can lead a horse to water but can't make them drink. Archon810: I haven't looked at that. I do know you need to have Time::HiRes installed before installing Maatkit (it's not identified as a dependency but mk-parallel-dump bombed because it wasn't installed.) awfief: The query analyzer does look like a lot of fun. As a managed service provider, I don’t have the (usually) tighter integration with the development teams that would allow me to review code and look for performance bottlenecks. I usually have to treat the app as a black box and examine everything else. Most of my clients have dbas so I’m relegated to plain ol’ sys admin duties. What’s sadder is, to date, I’ve only had one client actually make it a point to review the slow log on a regular basis. Oh well…you can lead a horse to water but can’t make them drink.

Archon810: I haven’t looked at that. I do know you need to have Time::HiRes installed before installing Maatkit (it’s not identified as a dependency but mk-parallel-dump bombed because it wasn’t installed.)

]]> By: http://openid.aol.com/Archon810 http://leapfrog.motd.org/2008/03/will-maatkit-make-me-sane/comment-page-1/#comment-23 http://openid.aol.com/Archon810 Wed, 19 Mar 2008 05:12:31 +0000 http://leapfrog.motd.org/2008/03/18/will-maatkit-make-me-sane/#comment-23 Do you know how mk-parallel-dump calculates the wall-clock time and dump time? I'm assuming the wall-clock time is the realtime one? Do you know how mk-parallel-dump calculates the wall-clock time and dump time? I’m assuming the wall-clock time is the realtime one?

]]> By: awfief@livejournal http://leapfrog.motd.org/2008/03/will-maatkit-make-me-sane/comment-page-1/#comment-24 awfief@livejournal Wed, 19 Mar 2008 03:39:18 +0000 http://leapfrog.motd.org/2008/03/18/will-maatkit-make-me-sane/#comment-24 Ma'atkit will definitely make you sane. Just check out the query profiler :) I love it! Ma’atkit will definitely make you sane.

Just check out the query profiler :) I love it!

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